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. 2012 Aug;78(15):5406-9.
doi: 10.1128/AEM.00491-12. Epub 2012 May 11.

Detection of imported wild polioviruses and of vaccine-derived polioviruses by environmental surveillance in Egypt

Soile Blomqvist  1 , Laila El Bassioni, Eman M El Maamoon Nasr, Anja Paananen, Svetlana Kaijalainen, Humayun Asghar, Esther de Gourville, Merja Roivainen
Affiliations

Detection of imported wild polioviruses and of vaccine-derived polioviruses by environmental surveillance in Egypt

Soile Blomqvist et al. Appl Environ Microbiol. 2012 Aug.

Abstract

Systematic environmental surveillance for poliovirus circulation has been conducted in Egypt since 2000. The surveillance has revealed three independent importations of wild-type poliovirus. In addition, several vaccine-derived polioviruses have been detected in various locations in Egypt. In addition to acute flaccid paralysis (AFP) surveillance, environmental surveillance can be used to monitor the wild poliovirus and vaccine-derived poliovirus circulation in populations in support of polio eradication initiatives.

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Figures

Fig 1
Fig 1
Map of Egypt indicating the provinces in which the specimens have been collected for environmental surveillance for polioviruses.
Fig 2
Fig 2
The evolutionary history of the VP1 nucleotide sequences of type 2 vaccine-derived polioviruses inferred by using the neighbor-joining method in MEGA5 (13). The distances are based on the numbers of base differences per sequence. The sequence of PV2/Sabin is used as a reference.
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